根据汉语意思，补全句子，使句意通畅。

1. My husband is using my car,so I have no means of_______(交通).

2. Don't worry. I'll book you the_______ (航班)to Bei jing.

3. We took a tour by_______(客车)to the Summer Palace.

4. We made our_______(启程)in the early morning.

目标实施过程中，管理者必须进行控制。有力的领导控制是实现目标动态控制的关键。